Spreading shrub 0.3-0.6 m tall. Branchlets angular and ridged, subsericeous between ridges. Leaves linear to narrowly elliptic or oblanceolate, 1-4 cm long, 0.6-1.0 (-1.5) mm wide, often gently incurved or wavy; upper surface prominently to obscurely 3-ribbed, minutely scabrid at least on ribs; margins vertically refracted about intramarginal vein (leaf oblong in cross-section) and usually abutting midvein; lower surface usually enclosed except for midvein and 2-grooved, occasionally partly exposed and subsericeous. Conflorescence usually terminal, erect, sessile or very shortly pedunculate, regular, umbelloid, c. 6-14-flowered. Flowers adaxially oriented. Flower colour: perianth and style white to pale pink. Perianth subsericeous to sparsely so outside, usually glabrous inside with a discolorous cushion-like pulvinus on each ventral tepal opposite ovary, occasionally pulvinus with a few minute hairs. Pistil 5-6.5 (-8?) mm long; style sharply hooked in apical 2 mm, glabrous except for minute hairs or papillae on back of style-end; pollen-presenter oblique. Follicle narrowly ovoid, 10-11 mm long, glabrous, faintly colliculose.
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